It’s very easy to get all of the nutrients you need from a vegan diet. I’ve been doing it for years now. And if you take a quick second to google “vegan athletes,” you’ll find many, many, many very fit and healthy humans-burly bodybuilders included. I’m personally more muscular now than I ever have been and I don’t even really think about the protein I’m getting anymore. I just try not to eat crap and it’s amazing what the body does when that happens. Also take a second to look at some fruitatarians.

Your invalid and moot point of setting the farm animals free is almost funny. I must say I’ve never heard that one before. Yes, if we all of a sudden set all of the farm animals free from their factory farms, many would cease to exist and their populations would dwindle dramatically. After that, we’d have so much more farm land to use for crops for human consumption, so many more resources being put towards crops for humans AND a much happier environment, as the pollution from animal agriculture would cut worldwide pollution by almost 20%. Wow, doesn’t that sound nice? Not to mention the fact that the animals would return to their normal sizes, as opposed to the hormone-filled, calorie-ridden monsters we’ve created who, many times, can’t even stand on their own two feet.

http://www.onegreenplanet.org/environment/facts-about-animal-agriculture-and-air-pollution/

I agree that protein is something that humans need, we’ve just been brainwashed into thinking that we need WAY more than we actually do to be healthy. And that amount is easily (and even accidentally and without trying) found in a plant-based diet.